package net.lshimokawa.pap6;

public class Calculadora {

	public final int sumar(int a, int b) {
		return a + b;
	}

	public final int restar(int a, int b) {
		return a - b;
	}

	public final int multiplicar(int a, int b) {
            return a * b;            
	}

	public final int dividir(int a, int b) {
            if (b==0) {
                return -1;
            } else{
                    return a / b;
            }
        }      	
}
